Malicious PDF — malware analysis report

Static analysis result for SHA-256 a857f61e6e9a8d9a…

MALICIOUS

PDF

39.5 KB Created: 2020-08-01 18:14:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c465187184bc322a0623b371d0d15def SHA-1: 7731389b12684ae55fa315272ecd83befd68e484 SHA-256: a857f61e6e9a8d9a8a9afbede38723c2c96162fc8a1483ee16e6ef858bac1acf
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=react+button+onclick'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com, likely to obscure the malicious destination. The ML classifier also strongly flagged this PDF as malicious. The document body contains obfuscated text and a reference to the malicious URL, suggesting a lure to trick users into clicking the link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=react+button+onclick
    • http://files.flippingcoinsgetaway.com/uploads/1/3/1/0/131070581/luwelo-widugisenufofig-worupasu-zepewes.pdf
    • http://files.laviniapennino-architecture.com/uploads/1/3/0/7/130775145/sudazakagu-fowavoregosu.pdf
    • http://files.luzthecakelady.com/uploads/1/3/0/8/130814043/bf9ed2c4ec.pdf
    • https://cdn.shopify.com/s/files/1/0432/2358/0839/files/budisemufugobuv.pdf
    • https://cdn.shopify.com/s/files/1/0430/0275/7281/files/rixinelitusasofuna.pdf
    • https://cdn.shopify.com/s/files/1/0430/8733/1481/files/91999388545.pdf
    • https://cdn.shopify.com/s/files/1/0429/2195/1391/files/what_does_discord_mean.pdf
    • https://cdn.shopify.com/s/files/1/0434/1635/4977/files/xigowunanugilidijo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7221/5448/files/netidirudezugigaxexu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7405/1491/files/nusokexe.pdf
    • https://cdn.shopify.com/s/files/1/0434/3706/4354/files/51202430964.pdf
    • https://cdn.shopify.com/s/files/1/0430/9227/9460/files/jekeluga.pdf
    • https://cdn.shopify.com/s/files/1/0435/3831/7464/files/11167664648.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005bb3.bin
8e57f41221713ac4ee009645a2b7e8b8bdc11563d1a14aeaf371b4bc5ae5869e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BB3 4728 bytes
font_01_sfnt_off00006be4.bin
9f8b7973c0a71c2a30748bc38f39c43c09c5c19510380313fea1bad816268db3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE4 11128 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.